Phonograph-brake



w. c. TEUNISZ. PHONOGRAPH BRAKE. APPLICATION FILED JUNE 17, I920- Patented Nov. 8, 1921.

wumtoz WaTeuniaz.

UNITED STATES PATENT OFFICE.

WILLIAI[ C. TEUNISZ, OF GRAND RAPIDS, MICHIGAN.

PHONOGBAPH-BRAKE.

Application filed June 17,

To all whom it may concern Be it known that I, WILLIAM G. TEUNISZ, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented a new and useful Phonograph-Brake, of which the following is a specification.

This invention relates to sound reproducing machines, and more particularly to ma chines of this character especially designed for operation in connection with the disk or flat record.

The primary object of the invention is to provide a novel form of automatic stopping mechanism including the fewest possible number of parts and so inter-relating them that the mechanism may be readily set to cause the sound arm to operate to cause the mechanism of the machine to automatically stop the rotation of the record supporting table to cause the machine to cease playing.

A further object of the invention is to provide a stopping mechanism which will be automatically adjusted by movement of the sound arm, thereby eliminating the necessity of the operator moving the adjusting mechanism by hand, to accomplish the adjustment.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawing:

Figure 1 illustrates a side elevational view of a portion of a sound arm and record table of a sound reproducing machine, showing the stop applied.

Fig. 2 illustrates a plan view of the same, the disk and sound arm being shown in dotted lines.

Fig. 3 illustrates a plan view of the outer portion of the controlling arm.

Fig. 4: illustrates a sectional view through a tone arm showing the tripping lever as applied thereto, and

Fig. 5 illustrates a fragmental detail view of the adjusting means.

Referring to the drawing in detail, the reference character 5 designates the usual record supporting table of a sound repro- Specification of Letters Patent.

Patented Nov. 8, 1921.

1920. Serial No. 389,637.

ducing machine, which is of the usual construction, and operated by the usual motor.

Secured to the upper surface of the cabinet of the machine, is a plate 6, the plate being held against displacement by means of the screw 7 passing through registering "lever 9, at various angles with relation to the tone arm supporting the same, according to the distance the tone arm is moved from the center of the record supporting table 5.

The tripping lever includes a curved supporting bracket 10 which is secured to the tone arm 11 by means of the screws 12, the bracket being apertured to accommodate the bolt 13 which also passes through an opening formed in the upper end of the tripping lever 9, there being provided a tensioning spring 14, held on the bolt 13 by means of the nut 15, so that the tripping lever 9 and ,bracket are held into close engagement with each other.

Pivotally connected to the plate 6, adjacent to one end thereof, is the controlling lever 16 which also lies within the path of travel of the tripping lever 9, when the tone arm is moving toward the center of the record supported on the record table 5, so that the tripping lever will contact with the controlling lever 16 to cause the operation of the brake to be hereinafter more fully described.

Forming a part of the controlling lever 16, is a right angled forked arm 17 which is provided with a lug 18 adapted to engage within the cut out portion 19 formed on the brake arm 20 which is also pivotally connected to the plate 6, by means of the pivot pin 21, the curved arm 22 of the brake having a right angled extension 23 for supporting the brake shoe 24;, and which is adapted to contact with the periphery of the record supporting table 5 to cause the table 5 to be stopped, in its I'Qta'tipnv A pin 25 has connection with the controlling lever 16 and accommodates one end of the coiled spring 26, the opposite end of said coiled spring 26 being anchored to. the

arm 22, and as shown the anchoring point 27, which connects the spring to the arme22 is eccentric to the axis of rotation of the brake arm 20, so that when the controlling lever 16 is moved to release the lug 18 from the cut out portion 19, the coiled spring 26will tend to throw the brake arm. toward the periphery of thetable 5 and set up a binding action betweenthe shoe and table 5 to cause thetable to cease rotating.

i the lever extending beyond the periphery of-the table 5to be -readily engaged by the operator. From the foregoing it will be obvious that when it is *desiredtoreset the machine, the lever 31 is moved 'to "cause thebra ke arm 20 to take a position as illustrated by Fig. 2 of the drawing. The tone arm 11 'isnow movedun'til the reproducer, carried at the outer end thereof isdisposed over the outer groove of the record supported by the table 5. a a a V It follows that during this movement of the tone arm 11, the tripping lever 9 contacts with the controlling lever 16, to cause the adjusting arm to assume an angle which will "cause the tripping lever 9 to contact with thecontrolling lever 16 at a period when the reproducer has reached the innermost groove of the record, at which location it is desired to stop-the operation of the machine. 7 Ifit is desired to adjust the lever 9 with relation to the plate 6, it is only necessary to rotate the screw 7, to move the inner end'thereof toward the lever 16, thus compensating for any lost motion which may be present between the arm 20 and arm 17.

It is believed that in view of the foregoing description, a further detail description of theoperation of the device is unnecessary. Having thus described the invention, what is claimed as new is 1. In combination with the record sup porting table and tone arm of a sound reproducing machine, an automatic stopping mechanism including a plate, an adjusting arm forming a' pa rtfof theg plate,a'brake armpivotallytonneeted to theplate, a con trolling lever pivo'tal'ly"connected to the plate, means for connecting the controlling lever and bralre arm whereby movement of the controlling lever will cause a relative movement of the brake arm to cause the same to contact with the table, a tripping lever carried by the tone arm, said tripping lever adapted to move into engagement with the adjusting arm to cause the tripping lever to be automatically set, and said tripping lever adapted to move into engagement with the controlling lever for causing the operation of the brake arm.

2. In combination with the record supporting table and tone arm of a sound reproducing machine, a tripping lever carried by the tone arm, a plate, means carried by the plate and lying'w'ithin thepath niatica'llysetting the tripping lever, 'a controlling lever and a brake armfpivotally connected to the plate, means for connecting the controlling lever and brake arm,

of travel of the tripping lever for auto- 7 means to break the connection between the 7 controlling lever and brake arm to cause the operation of the brake arm, said controlling lever lying within the path of travel of the tripping lever, and means for resetting the brake arm,

8. In combination with the record supporting table and tone armsof a sound reproducing machine, a plate a controlling lever pivo'taily supported on the plateand having a forked end, said forked end being provided with alug, a brake ar'in'pivotally supportedby the plate and having a cut out portion to receive'the arm, a brake shoe carried by the brake arm and'adapted to Contact with the periphery of the'table, to prevent rotation thereof, means on the tone arm for tripping the controlling lever, means for automatically setting the trip ping lever, and means for manually setting the brakefarm,

I 4. In combination withthe "record supporting table and tone arm of a sound reproducing machine, a fstopping mechanism including a plate, an" arm carried by the plate, tripping lever carried by the tone arm and adapted to .beadji'isted with rela- WILLIAM C, ITEUNISZ. V IVitnes's'es;

A. J. Stirs,

FRANK'V-. SMITH. 

